Door-latching mechanism



Oct. 14, 1930.

F. 'E. RADKE DOOR LATCHING MECHANI SM Filed April 25, 1929 WITNESSES v 2Sheets-Sheet l W Ill 1 Frederick'l'lfiadke ATTOR NEYS Oct. 14, 1930.RADKE 1,778,687

DOOR LATCHING MECHANI SM Filed April 25, 1929 2 Sheets-Sheet 2 lNVENTORWITNESSES FrederiekERadk w ATIQRNYs Patented Oct. 14, 1 930 FREDERICK E.Banks, on LAURELTQN, NEW YORK noon-Laronnve MECHANISM Application filedApril 23,

This invention relates to ale-tolling and locking mechanism for closuressuch'as doors.

The principal object of the invention is the provision of an improvedlatching and locking mechanism designed and adapted to be used inconjunction with a closure element or door, for latching it in an openedand also in a closed position, for locking it in the closed position,for unlatching the door from the inside or outside when unlocked, andwhich may also be locked and unlocked from the inside or outside of thedoor.

lVith the foregoing and other objects in view, the invention resides inthe particular provision, combinations, and arrangements ot the parts,hereinafter described and claimed and illustrated in the accompanyingdrawings, in which- Figure 1 is an elevation of the mechanism applied toa garage door viewed from the inside, portions being broken away.

Fig. 2 is a. vertical sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a horizontal sectional view showing the lock and latchactuating means.

1 is a sectional view taken on the line 1 1 of Fig. 8.

Fig. 5 is an enlarged 'ertical sectional view, showing the lower latchengaged with a fixed member to hold the door in the opened position.

Fig. 6 is an enlarged inside view of the lower latch.

Referring now more particularly to the drawings, it will be apparent,that there is shown a door 10 and its frame 11, it being understood thatthe door is hingedly mounted for movement to the opened and closedpositions. The mechanism of the present invention is applied to the door10, and nearly all of the parts are secured or arranged on the inside ofthe door with others applied to the frame and door sill.

The means for latching and unla ching the door 10 includes a bracketmember 12 fixedly secured to the inside of the door near the upper edgeand also near the tree vertical edge thereof. A latch member 13 ispivotally mounted as at 14 on the bracket member 12. One section of arod 15 is pivotally connected 1929. Serial No. 357,572.

at 16 with the latch member 13, and is bracket member 12. A coil spring17 surrounds the rod section and has one end thereof in engagement withthe bracket and the opposite end thereof in engagement with the pivot16. The spring 17 normally and yieldingly retains the latch member 13 ina latching position so as to be engageable with a fixed member 18positioned on the frame 11, when the door 10 is swung to the closedposition. It is to be understood that the bracket member 12, latchmember 123, spring 17, and the fixed member 18 constitute the upperlatch. A lower latch is employed and includes a bracket member 19secured to the inside of the door near the lower edge thereof. A latchmember 20 is pivotally mounted as at 21 on the bracket member 19, andprojects laterally inward. A link 22 has one end pivotally connected asat 23 with the latch member 20 and the opposite end thereof is pivotallyconnected as at 24; with a rocker 25, whose fulcrum 26 is supported bythe bracket member 19. One end of the rocker engages a stop 27 on thebracket member 19 to limit the rocking movement of the rocker 25 in onedirection by the action of a spring 28 having one end connected as at 29with the rocker 25 and the opposite end thereof being connected with thebracket member 19 as at 3 A latch member 31 is pivotally mounted as at32 on the bracket member 19, and projects tothe outside of the doorthrough an opening in the door. engagement with the latch member 31 tonormally and yieldingly retain the same in a latching position, and alsoserves to normally and yieldingly retain the latch member 20 in alatching position, the latter feature being accomplished through theintervention 01' the rocker 25 and link 22. The lower end of the rod 15is pivotally connected as at 33 with the latch member 31. At this timeattention is called to the fact that the spring 17 of the upper latchcooperates with the spring 28 to retain the latch members 20 and'31 inthe latching positions. The upward movement of the rod 15 isv limited bya'pin 34 carried by the rod 15, the said pin 84 being engage The rocker25 is constantly kept in able with the bracket member 12. The rod 15 hasa handle 35 for effecting the movement of the rod 15 downwardly, whichwill cause the latch members 13, 20 and 31 to move to positions enablingunlatching of the door, whether in the closed or opened positions. Inthis connection it is to be observed that the latch member 20 engageablewith a fixed member 36 on the sill 87, and the latch member 31 isengageable with a fixed member 38 properly positioned to hold the doorin the opened position. It is to be understood that each 01' the latchmembers will be presented with a cam surface 39 causing movement thereoffrom the normal position to clear the related fixed member with which itlatches in response to the movement of the door.

Means additional to the handle 35 may be provided for actuating the rodfrom the outside of the door, such as the actuator d0 which is pivotallymounted as at ll on a lug 42 attached to the door 10.

In order to lock the upper and lower latches against being operated,there is provided a locking device 43. This locking device may be of anyof the types available on the market, and is preferably of the key andspring actuated type. The device 43 will essentially include a bolt 44-.capable of being retracted by a key 45, indicated in dot and dash linesin Fig. 4, from the outside of the door. The bolt n may also beretracted by manipulating a. knob 46 on the inside of the door, inasmuchas the device 43 will be secured to the door on the inside. The device4-3 also includes a check or catch d7 which may be manipulated to holdthe bolt 44: in the retracted position or to release the same to thelocking position. The bolt let is engageable in the notch l8 of a member49 connected in the rod 15, when the rod is in its normal position, asshown in Figs. 1 and 2.

From the foregoing it will be apparent. that when the door 10 swung tothe closed position, the latch members 13 d will be engaged respectivelywith their related fixed members 18 and 36, thereby latching the door 10in the closed position. Upon manipulation of either the handle or theactuator d0 said latch members 13 and 2t may be disenq'aged in orderthat the door In may be opened. It will also be apparent that bypressing on the latch member 31 with the foot a similar result will beaccomplished. It will also be apparent that the door 10 may be latchedin the opened position. by the engagement of the latch member 3i withthe fixed member 38, and that by pressing downwardly With the foot onthe latch member 31 it may be disengaged from the fixed member 88, topermit the door 10 to be swung to a closed position in which it will belatched by the engagement of the latch members 13 and 20 with theirrelated fixed members 18 and 36.

It is to be understood that the invention is not restricted to theprecise arrangement of parts shown and described, as details ofconstruction may be modified and rearranged without departing from thespirit of the invention, the scope of which is limited only by the termsof the appended claim.

I claim:

A latching device comprising a bracket member adapted to be fixedlysecured, re versely arranged pivoted late-h members on said bracketmember to engage separate lixcfi: members, a rocker on said bracketmember engageable with the first latch member, a link interposing saidrocker and second latch member, and a spring acting on said to retain itand the link normally so as to yielding'ly retain the latch members inlatching positions.

FREDERICK E. RADl'IE.

